Hi,
I read your project's description very carefully, I am expert on web-scraping, I work only on scraping/BOT, I can complete your project 100% perfectly..
I can give you a perfect desktop BOT by C# to collect "latitude and longitude(gps coordinates)" by listed address from excel, and save data in same excel.
Please check my past completed projects they all are on scraping/BOT, link is >>>> https://www.freelancer.com/u/developerphp2007.html ..
I can assure you, If you will get anything wrong from me then you don't need to pay me money, so I can assure you, you will get 100% perfect desktop BOT..
If you have questions please ask me..
Thanks,
Kuntal..